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Finding the Fourth Proportional to 147,897.60, 221,679.90 and 72,858.84

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Solution

The fourth proportional to 147,897.60, 221,679.90 and 72,858.84 is: 109,206.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,897.60 : 221,679.90 = 72,858.84 : x
  2. Step 2: Convert to fraction form
    147,897.60/221,679.90 = 72,858.84/x
  3. Step 3: Cross multiply
    147,897.60x = 221,679.90 × 72,858.84
  4. Step 4: Simplify right side
    147,897.60x = 16,151,340,365.32
  5. Step 5: Solve for x
    x = 16,151,340,365.32/147,897.60
  6. Step 6: Final answer
    x = 109,206.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.